I made a thread in Off Topic for talking about WW1+ AoE 
Regarding the Finland revolution, I’m pretty sure the revolution mechanic ≠ historical revolutions. At least, not any more. E.g. Canada never revolted. I think the Finland revolution (and maybe some others) are meant to be more “what-ifs”, or the idea of a unique culture inside a larger empire that could theoretically have become its own thing.
I really really doubt the Finland revolution is supposed to represent actual Finnish independance during the Russian Revolution and is more just about the “vibe” of the time and place.